Method and Structure for Kinetic Energy Based Generator for Portable Electronic Devices

ABSTRACT

An asymmetric flywheel is coupled to an input gear that is attached to a lever or alike. The input gear and flywheel gear are engaged as the user rotates the lever. As a result, the flywheel spins and electricity is generated by the micro electromagnetic generator. When there is no direct user manual input, the input gear and the flywheel gear are disengaged. The flywheel is an unbalanced pivoted mass that rotates with inertial forces from physical accelerations by user&#39;s movement and gravitational forces, similar to a self-winding mechanism automatic watch. AC electricity is generated as a result of the flywheel&#39;s movement.

CROSS-REFERENCES TO RELATED APPLICATIONS

This application claims priority to provisional patent application Ser. No. 60/732,349; filed on Oct. 31, 2006; commonly assigned, and of which is hereby incorporated by reference for all purposes.

BACKGROUND OF THE INVENTION

Portable electronics devices such as cell phones become indispensable part of daily life. As more features such as music and video added to cell phones, power consumption increases significantly. Battery life becomes a bottleneck. Furthermore, dead batteries in cell phones cause inconvenience and have safety concerns in an emergency situation. Commercially available portable charging devices such as external batteries and stand-alone solar panel are bulky and cumbersome; therefore they have not been adopted widely by consumers. Thus, there is a need in the art for methods and apparatus for fabricating an integrated kinetic energy based generator for electricity generation for portable electronic devices.

SUMMARY OF THE INVENTION

The present invention relates to a method and device for fabricating an integrated kinetic energy based generator for portable electronic devices. The integrated generator device consists of a kinetic energy harnessing transducer mechanism and electricity conditioning unit. The kinetic energy harnessing mechanism consists of a flywheel device and a gear train that couples to the micro electromagnetic generator.

An asymmetric flywheel is coupled to an input gear that is attached to a lever or alike. The input gear and flywheel gear are engaged as the user rotates the lever. As a result, the flywheel spins and electricity is generated by the micro electromagnetic generator. When there is no direct user manual input, the input gear and the flywheel gear are disengaged. The flywheel is an unbalanced pivoted mass that rotates with inertial forces from physical accelerations by user's movement and gravitational forces, similar to a self-winding mechanism automatic watch. AC electricity is generated as a result of the flywheel's movement

To minimize form factor, the integrated generator device is fabricated using IC and MEMS processes. The micro generator deploys planar electromagnetic components such as thin film magnetic film and planar coils. Permanent magnetic material is deposited using methods such as sputter, evaporation, Physical Vapor Deposition (PVD), pulsed laser deposition, etc. Planar coils are fabricated by deposition, electroplating, photo lithography and etch.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a simplified block diagram illustrating components of a power generation device for portable devices according to one embodiment of the present invention.

FIG. 2 is a simplified 3-D diagram illustrating components of an electricity generation device according to one embodiment of the present invention.

FIG. 3 is simplified 3-D diagrams illustrating components of a power generation device according to one embodiment of the present invention.

FIG. 4 is simplified diagrams illustrating apparatus of a power generation device embedded in a mobile phone according to one embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

FIG. 1 is a simplified block diagram illustrating components of a power generation device for portable devices according to one embodiment of the present invention. As illustrated, a kinetic energy is a source 101 that is provided by direct user input or indirectly in forms such as user movements. The kinetic energy is converted to raw electricity 103 by a transducer by electromagnetic methods. The raw electricity is conditioned to a regulated voltage and current 105. The regulated electricity is stored in a re-chargeable battery via a charger device.

FIG. 2 is a simplified 3-D diagram illustrating components of an electricity generation device according to one embodiment of the present invention. As illustrated, a flywheel 201 that is coupled to an input gear 203 that is attached to a lever 205. The flywheel spins as the user rotate the lever 207. As depicted in the A-A zoom-in diagram, a permanent magnetic film 209 is coupled to the flywheel and is at a close distance 211 to a planar coil 213 on another substrate 215. As the permanent magnetic film moves over the planar coil stores, electricity 217 is generated via electromagnetic effect.

FIG. 3 is simplified 3-D diagrams illustrating components of a power generation device according to one embodiment of the present invention. As illustrated in FIG. 3A, an asymmetric flywheel 301 is coupled to an input gear 303 that is attached to a lever 305. The input gear and flywheel gear are engaged 307 as the user rotates the lever, and the flywheel spins and electricity is generated as a result.

As depicted FIG. 3B, when there is no direct user manual input, the input gear and the flywheel gear are disengaged 309. The flywheel is an unbalanced pivoted mass that rotates with inertial forces from physical accelerations by user's movement and gravitational forces, similar to a self-winding mechanism automatic watch. AC electricity is generated as a result of the flywheel's movement.

FIG. 4 is simplified diagrams illustrating apparatus of a power generation device embedded in a mobile phone according to one embodiment of the present invention. As illustrated, the integrated generator is embedded in a mobile phone with three main components: gear train 401, flywheel 403, and the micro generator 405. According to one embodiment of the present invention, kinetic energy is input by a user by pulling a string back and forth 407. In another embodiment of the present invention, kinetic energy is input by a user by rotating a level in circle motion 409. Yet in another embodiment of the present invention, kinetic energy is input by a user by pressing a knob in up-down motion 411.

It is also understood that the examples and embodiments described herein are for illustrative purposes only and that various modifications or changes in light thereof will be suggested to persons skilled in the art and are to be included within the spirit and purview of this application and scope of the appended claims. 

1. A portable electric generator apparatus comprising: an electromagnetic electric generator member comprising a first terminal and a second terminal; a kinetic energy generating member coupled to the electromagnetic electric generator member, the kinetic energy generating member receiving motion energy from an external source, the motion energy being direct and/or indirect; and a storage device having a positive terminal and a negative terminal, the positive terminal being coupled to the first terminal; and the negative terminal being coupled to the second terminal; wherein the storage device is a capacitor and/or a battery.
 2. The apparatus of claim 1 further comprising a housing, the housing enclosing the electromagnetic electric generator member, the kinetic energy generating member, and the storage device
 3. The apparatus of claim 1 wherein the kinetic energy generating member comprises a flywheel, the flywheel being coupled to the electromagnetic generator member, the flywheel being coupled to a drive member for converting kinetic energy into rotational energy provided in the flywheel.
 4. The apparatus of claim 3 wherein the drive member comprises a rotating crank device, the rotating crank device being operable to move by a human user.
 5. The apparatus of claim 3 wherein the drive member comprises a pull member, the pull member being operable to move in a first direction by a human user.
 6. The apparatus of claim 3 wherein the drive member comprises a level member, the level member being operable to move in one or more directions by a human user.
 7. The apparatus of claim 1 wherein the kinetic energy generating member comprises one or more drive members, the one or more drive members comprise a first gear member coupled to a second gear member, the second gear member being coupled to a flywheel.
 8. The apparatus of claim 1 wherein the electro-magnetic generator comprises a flywheel comprising one or more magnetic regions coupled to a electric coil member, the flywheel inducing an electric current on one or more portions of the electric coil member, the electric current being provided between the third terminal and the fourth terminal.
 9. The apparatus of claim 8 wherein the electric coil is characterized by a planar structure.
 10. The apparatus of claim 8 wherein the one or more magnetic regions comprises one or more films of magnetic material.
 11. The apparatus of claim 8 wherein the one or more magnetic regions comprises one or more discrete magnetic devices.
 12. A portable electric generator apparatus comprising: a housing member, the housing member enclosing: a piezo electric generator member comprising a first terminal and a second terminal; an electromagnetic electric generator member comprising a third terminal and a fourth terminal; a kinetic energy generating member coupled to both the piezo electric generator member and the electromagnetic electric generator member; a storage device having a positive terminal and a negative terminal, the positive terminal being coupled to the first terminal and the third terminal, and the negative terminal being coupled to the second terminal and the fourth terminal a flywheel comprising one or more magnetic regions provided on the electromagnetic electric generator member; an electric coil member coupled to the flywheel, the flywheel inducing an electric current on one or more portions of the electric coil member, the electric current being provided between the third terminal and the fourth terminal; and an unbalanced counter weight coupled to the flywheel, the unbalanced counter weight being adapted to cause rotation of the flywheel using indirect movement by a human user.
 13. The apparatus of claim 12 further comprising a common shaft coupling the flywheel to the electric coil member and the flywheel to the unbalanced counter weight.
 14. The apparatus of claim 12 wherein the kinetic energy generating member coupled to a drive member for converting kinetic energy into rotational energy provided in the flywheel, the drive member being adapted to cause rotation of the flywheel by direct input by a human user.
 15. The apparatus of claim 12 wherein the drive member is de-coupled from the piezo electric generator member upon direct input by the human user of the drive member and coupled to the fly wheel during a first state of operation, the first state of operation being associated with direct input by the human user.
 16. The apparatus of claim 15 wherein the drive member is de-coupled from the flywheel and the flywheel is coupled to the piezo-electric generator member during a second state of operation, the second state of operation being associated with the in-direct input by the human user, the in-direct input by the human user being associated with translational and/or rotational movement of the housing member.
 17. The apparatus of claim 16 wherein the indirect input by the human user being associated with a body movement of the human user. 